id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
931	400 response to cyrillic domain	ynikitenko@…		"I've created a cyrillic domain name and want to use nginx to serve simple html files. I get 400 when I try to open the domain. No useful information in logs is shown.

I copied nginx.conf from an ASCII domain I had, but that didn't work. Also permissions to my public_html are same. I restarted nginx, that didn't help (-s reload and also killing the process).

debug.log:
{{{
2016/03/13 09:32:20 [debug] 16419#0: accept on 0.0.0.0:80, ready: 0
2016/03/13 09:32:20 [debug] 16419#0: posix_memalign: 00007F6A8C587EB0:256 @16
2016/03/13 09:32:20 [debug] 16419#0: *16 accept: 90.154.64.230 fd:3
2016/03/13 09:32:20 [debug] 16419#0: posix_memalign: 00007F6A8C4CAA80:256 @16
2016/03/13 09:32:20 [debug] 16419#0: *16 event timer add: 3: 60000:1457876000528
2016/03/13 09:32:20 [debug] 16419#0: *16 reusable connection: 1
2016/03/13 09:32:20 [debug] 16419#0: *16 epoll add event: fd:3 op:1 ev:80002001
2016/03/13 09:32:20 [debug] 16419#0: *16 http wait request handler
2016/03/13 09:32:20 [debug] 16419#0: *16 malloc: 00007F6A8C4C6B30:1024
2016/03/13 09:32:20 [debug] 16419#0: *16 recv: fd:3 309 of 1024
2016/03/13 09:32:20 [debug] 16419#0: *16 reusable connection: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 posix_memalign: 00007F6A8C44EA00:4096 @16
2016/03/13 09:32:20 [debug] 16419#0: *16 http process request line
2016/03/13 09:32:20 [debug] 16419#0: *16 http request line: ""GET / HTTP/1.1""
2016/03/13 09:32:20 [debug] 16419#0: *16 http uri: ""/""
2016/03/13 09:32:20 [debug] 16419#0: *16 http args: """"
2016/03/13 09:32:20 [debug] 16419#0: *16 http exten: """"
2016/03/13 09:32:20 [debug] 16419#0: *16 posix_memalign: 00007F6A8C4A41A0:4096 @16
2016/03/13 09:32:20 [debug] 16419#0: *16 http process request header line
2016/03/13 09:32:20 [debug] 16419#0: *16 http header: ""Host: xn--80aaagiydsciqb5hsf.xn--p1ai""
2016/03/13 09:32:20 [debug] 16419#0: *16 http header: ""User-Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0""
2016/03/13 09:32:20 [debug] 16419#0: *16 http header: ""Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8""
2016/03/13 09:32:20 [debug] 16419#0: *16 http header: ""Accept-Language: en-US,en;q=0.5""
2016/03/13 09:32:20 [debug] 16419#0: *16 http header: ""Accept-Encoding: gzip, deflate""
2016/03/13 09:32:20 [debug] 16419#0: *16 http header: ""Connection: keep-alive""
2016/03/13 09:32:20 [debug] 16419#0: *16 http header done
2016/03/13 09:32:20 [debug] 16419#0: *16 event timer del: 3: 1457876000528
2016/03/13 09:32:20 [debug] 16419#0: *16 generic phase: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 rewrite phase: 1
2016/03/13 09:32:20 [debug] 16419#0: *16 test location: ""/""
2016/03/13 09:32:20 [debug] 16419#0: *16 using configuration ""/""
2016/03/13 09:32:20 [debug] 16419#0: *16 http cl:-1 max:78643200
2016/03/13 09:32:20 [debug] 16419#0: *16 rewrite phase: 3
2016/03/13 09:32:20 [debug] 16419#0: *16 post rewrite phase: 4
2016/03/13 09:32:20 [debug] 16419#0: *16 generic phase: 5
2016/03/13 09:32:20 [debug] 16419#0: *16 generic phase: 6
2016/03/13 09:32:20 [debug] 16419#0: *16 generic phase: 7
2016/03/13 09:32:20 [debug] 16419#0: *16 generic phase: 8
2016/03/13 09:32:20 [debug] 16419#0: *16 access phase: 9
2016/03/13 09:32:20 [debug] 16419#0: *16 access phase: 10
2016/03/13 09:32:20 [debug] 16419#0: *16 post access phase: 11
2016/03/13 09:32:20 [debug] 16419#0: *16 try files phase: 12
2016/03/13 09:32:20 [debug] 16419#0: *16 http init upstream, client timer: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 epoll add event: fd:3 op:3 ev:80002005
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""QUERY_STRING""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""QUERY_STRING: ""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""REQUEST_METHOD""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""GET""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""REQUEST_METHOD: GET""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""CONTENT_TYPE""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""CONTENT_TYPE: ""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""CONTENT_LENGTH""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""CONTENT_LENGTH: ""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""REQUEST_URI""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""/""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""REQUEST_URI: /""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""PATH_INFO""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""/""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""PATH_INFO: /""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""DOCUMENT_ROOT""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""/usr/share/nginx/html""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""DOCUMENT_ROOT: /usr/share/nginx/html""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""SERVER_PROTOCOL""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""HTTP/1.1""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""SERVER_PROTOCOL: HTTP/1.1""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""REQUEST_SCHEME""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""http""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""REQUEST_SCHEME: http""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: """"
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""REMOTE_ADDR""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""90.154.64.230""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""REMOTE_ADDR: 90.154.64.230""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""REMOTE_PORT""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""13760""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""REMOTE_PORT: 13760""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""SERVER_PORT""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""80""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""SERVER_PORT: 80""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script copy: ""SERVER_NAME""
2016/03/13 09:32:20 [debug] 16419#0: *16 http script var: ""арсенияникитенко.рф""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""SERVER_NAME: арсенияникитенко.рф""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""HTTP_HOST: xn--80aaagiydsciqb5hsf.xn--p1ai""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""HTTP_USER_AGENT: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""HTTP_ACCEPT: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""HTTP_ACCEPT_LANGUAGE: en-US,en;q=0.5""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""HTTP_ACCEPT_ENCODING: gzip, deflate""
2016/03/13 09:32:20 [debug] 16419#0: *16 uwsgi param: ""HTTP_CONNECTION: keep-alive""
2016/03/13 09:32:20 [debug] 16419#0: *16 http cleanup add: 00007F6A8C44F910
2016/03/13 09:32:20 [debug] 16419#0: *16 get rr peer, try: 1
2016/03/13 09:32:20 [debug] 16419#0: *16 socket 4
2016/03/13 09:32:20 [debug] 16419#0: *16 epoll add connection: fd:4 ev:80002005
2016/03/13 09:32:20 [debug] 16419#0: *16 connect to unix:///home/nikitenko/arsenia/arsenia.sock, fd:4 #17
2016/03/13 09:32:20 [debug] 16419#0: *16 connected
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream connect: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 posix_memalign: 00007F6A8C4C5170:128 @16
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream send request
2016/03/13 09:32:20 [debug] 16419#0: *16 chain writer buf fl:0 s:630
2016/03/13 09:32:20 [debug] 16419#0: *16 chain writer in: 00007F6A8C44F948
2016/03/13 09:32:20 [debug] 16419#0: *16 writev: 630
2016/03/13 09:32:20 [debug] 16419#0: *16 chain writer out: 0000000000000000
2016/03/13 09:32:20 [debug] 16419#0: *16 event timer add: 4: 60000:1457876000528
2016/03/13 09:32:20 [debug] 16419#0: *16 http finalize request: -4, ""/?"" a:1, c:2
2016/03/13 09:32:20 [debug] 16419#0: *16 http request count:2 blk:0
2016/03/13 09:32:20 [debug] 16419#0: *16 http run request: ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream check client, write event:1, ""/""
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream recv(): -1 (11: Resource temporarily unavailable)
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream request: ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream dummy handler
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream request: ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream process header
2016/03/13 09:32:20 [debug] 16419#0: *16 malloc: 00007F6A8C4B0350:4096
2016/03/13 09:32:20 [debug] 16419#0: *16 recv: fd:4 108 of 4096
2016/03/13 09:32:20 [debug] 16419#0: *16 http uwsgi status 400 ""400 BAD REQUEST""
2016/03/13 09:32:20 [debug] 16419#0: *16 http uwsgi header: ""X-Frame-Options: SAMEORIGIN""
2016/03/13 09:32:20 [debug] 16419#0: *16 http uwsgi header: ""Content-Type: text/html""
2016/03/13 09:32:20 [debug] 16419#0: *16 http uwsgi header done
2016/03/13 09:32:20 [debug] 16419#0: *16 xslt filter header
2016/03/13 09:32:20 [debug] 16419#0: *16 charset: """" > ""utf-8""
2016/03/13 09:32:20 [debug] 16419#0: *16 HTTP/1.1 400 BAD REQUEST
2016/03/13 09:32:20 [debug] 16419#0: *16 write new buf t:1 f:0 00007F6A8C4A4D78, pos 00007F6A8C4A4D78, size: 207 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 http write filter: l:0 f:0 s:207
2016/03/13 09:32:20 [debug] 16419#0: *16 http cacheable: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream process upstream
2016/03/13 09:32:20 [debug] 16419#0: *16 pipe read upstream: 1
2016/03/13 09:32:20 [debug] 16419#0: *16 pipe preread: 26
2016/03/13 09:32:20 [debug] 16419#0: *16 readv: 1:3988
2016/03/13 09:32:20 [debug] 16419#0: *16 pipe recv chain: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 pipe buf free s:0 t:1 f:0 00007F6A8C4B0350, pos 00007F6A8C4B03A2, size: 26 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 pipe length: -1
2016/03/13 09:32:20 [debug] 16419#0: *16 input buf #0
2016/03/13 09:32:20 [debug] 16419#0: *16 pipe write downstream: 1
2016/03/13 09:32:20 [debug] 16419#0: *16 pipe write downstream flush in
2016/03/13 09:32:20 [debug] 16419#0: *16 http output filter ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 http copy filter: ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 image filter
2016/03/13 09:32:20 [debug] 16419#0: *16 xslt filter body
2016/03/13 09:32:20 [debug] 16419#0: *16 http postpone filter ""/?"" 00007F6A8C4A4F48
2016/03/13 09:32:20 [debug] 16419#0: *16 http chunk: 26
2016/03/13 09:32:20 [debug] 16419#0: *16 write old buf t:1 f:0 00007F6A8C4A4D78, pos 00007F6A8C4A4D78, size: 207 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 write new buf t:1 f:0 00007F6A8C4A5088, pos 00007F6A8C4A5088, size: 4 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 write new buf t:1 f:0 00007F6A8C4B0350, pos 00007F6A8C4B03A2, size: 26 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 write new buf t:0 f:0 0000000000000000, pos 00007F6A8BE9795D, size: 2 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 http write filter: l:0 f:0 s:239
2016/03/13 09:32:20 [debug] 16419#0: *16 http copy filter: 0 ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 pipe write downstream done
2016/03/13 09:32:20 [debug] 16419#0: *16 event timer: 4, old: 1457876000528, new: 1457876000531
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream exit: 0000000000000000
2016/03/13 09:32:20 [debug] 16419#0: *16 finalize http upstream request: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 finalize http uwsgi request
2016/03/13 09:32:20 [debug] 16419#0: *16 free rr peer 1 0
2016/03/13 09:32:20 [debug] 16419#0: *16 close http upstream connection: 4
2016/03/13 09:32:20 [debug] 16419#0: *16 free: 00007F6A8C4C5170, unused: 48
2016/03/13 09:32:20 [debug] 16419#0: *16 event timer del: 4: 1457876000528
2016/03/13 09:32:20 [debug] 16419#0: *16 reusable connection: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 http upstream temp fd: -1
2016/03/13 09:32:20 [debug] 16419#0: *16 http output filter ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 http copy filter: ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 image filter
2016/03/13 09:32:20 [debug] 16419#0: *16 xslt filter body
2016/03/13 09:32:20 [debug] 16419#0: *16 http postpone filter ""/?"" 00007FFF84A55820
2016/03/13 09:32:20 [debug] 16419#0: *16 http chunk: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 posix_memalign: 00007F6A8C4C6FF0:4096 @16
2016/03/13 09:32:20 [debug] 16419#0: *16 write old buf t:1 f:0 00007F6A8C4A4D78, pos 00007F6A8C4A4D78, size: 207 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 write old buf t:1 f:0 00007F6A8C4A5088, pos 00007F6A8C4A5088, size: 4 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 write old buf t:1 f:0 00007F6A8C4B0350, pos 00007F6A8C4B03A2, size: 26 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 write old buf t:0 f:0 0000000000000000, pos 00007F6A8BE9795D, size: 2 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 write new buf t:0 f:0 0000000000000000, pos 00007F6A8BE9795A, size: 5 file: 0, size: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 http write filter: l:1 f:0 s:244
2016/03/13 09:32:20 [debug] 16419#0: *16 http write filter limit 0
2016/03/13 09:32:20 [debug] 16419#0: *16 writev: 244
2016/03/13 09:32:20 [debug] 16419#0: *16 http write filter 0000000000000000
2016/03/13 09:32:20 [debug] 16419#0: *16 http copy filter: 0 ""/?""
2016/03/13 09:32:20 [debug] 16419#0: *16 http finalize request: 0, ""/?"" a:1, c:1
2016/03/13 09:32:20 [debug] 16419#0: *16 set http keepalive handler
2016/03/13 09:32:20 [debug] 16419#0: *16 http close request
2016/03/13 09:32:20 [debug] 16419#0: *16 http log handler
2016/03/13 09:32:20 [debug] 16419#0: *16 free: 00007F6A8C4B0350
2016/03/13 09:32:20 [debug] 16419#0: *16 free: 00007F6A8C44EA00, unused: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 free: 00007F6A8C4A41A0, unused: 0
2016/03/13 09:32:20 [debug] 16419#0: *16 free: 00007F6A8C4C6FF0, unused: 3791
2016/03/13 09:32:20 [debug] 16419#0: *16 free: 00007F6A8C4C6B30
2016/03/13 09:32:20 [debug] 16419#0: *16 hc free: 0000000000000000 0
2016/03/13 09:32:20 [debug] 16419#0: *16 hc busy: 0000000000000000 0
2016/03/13 09:32:20 [debug] 16419#0: *16 tcp_nodelay
2016/03/13 09:32:20 [debug] 16419#0: *16 reusable connection: 1
2016/03/13 09:32:20 [debug] 16419#0: *16 event timer add: 3: 65000:1457876005531
2016/03/13 09:32:20 [debug] 16419#0: *16 post event 00007F6A8C45FA50
2016/03/13 09:32:20 [debug] 16419#0: *16 delete posted event 00007F6A8C45FA50
2016/03/13 09:32:20 [debug] 16419#0: *16 http keepalive handler
2016/03/13 09:32:20 [debug] 16419#0: *16 malloc: 00007F6A8C4C6B30:1024
2016/03/13 09:32:20 [debug] 16419#0: *16 recv: fd:3 -1 of 1024
2016/03/13 09:32:20 [debug] 16419#0: *16 recv() not ready (11: Resource temporarily unavailable)
2016/03/13 09:32:20 [debug] 16419#0: *16 free: 00007F6A8C4C6B30
}}}

more error.log
{{{
2016/03/13 09:18:04 [notice] 16418#0: signal process started
}}}
(note that was some time before my attempt to connect).

I know that 400 may be connected with cookies, but I used wget, curl, Opera and Firefox to open that page with the same results.

My nginx.conf:

{{{
server {
    server_name людмилавахнина.рф;
    charset     utf-8;
    #source_charset     utf-8;
    error_log /var/log/nginx/lvahnina_debug.log debug;
    error_log /var/log/nginx/lvahnina_error.log info;
    # these two files are empty. No errors.
    root /home/nikitenko/lvahnina/public_html;

    location = / {
        try_files /index.html =404;
    }

    location = /index      { return 404; }

    location / {
        try_files $uri.html =404;
        #try_files $uri.html;
    }
}
}}}

I don't have much memory on the machine, but probably that should be enough,
{{{
$ free
              total        used        free      shared  buff/cache   available
Mem:         262144      136308       19444        5756      106392       46756
Swap:             0           0           0
}}}"	defect	closed	minor		documentation	1.6.x	fixed	400, cyrillic,		Linux xn--80akalaancvbenpow7r.xn--p1ai 2.6.32-042stab108.1 #1 SMP Thu Apr 23 19:17:11 MSK 2015 x86_64 x86_64 x86_64 GNU/Linux	"nginx version: nginx/1.6.3
built by gcc 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) 
TLS SNI support enabled
configure arguments: --prefix=/usr/share/nginx --sbin-path=/usr/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --http-client-body-temp-path=/var/lib/nginx/tmp/client_body --http-proxy-temp-path=/var/lib/nginx/tmp/proxy --http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi --http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi --http-scgi-temp-path=/var/lib/nginx/tmp/scgi --pid-path=/run/nginx.pid --lock-path=/run/lock/subsys/nginx --user=nginx --group=nginx --with-file-aio --with-ipv6 --with-http_ssl_module --with-http_spdy_module --with-http_realip_module --with-http_addition_module --with-http_xslt_module --with-http_image_filter_module --with-http_geoip_module --with-http_sub_module --with-http_dav_module --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_random_index_module --with-http_secure_link_module --with-http_degradation_module --with-http_stub_status_module --with-http_perl_module --with-mail --with-mail_ssl_module --with-pcre --with-pcre-jit --with-google_perftools_module --with-debug --with-cc-opt='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic' --with-ld-opt='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,-E'"